/*
 * Copyright 2022 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package com.google.example;

import java.util.Arrays;
import java.util.List;
import org.apache.beam.sdk.transforms.SimpleFunction;

/** Splits PCollection strings into tokens. */
public class SplitString extends SimpleFunction<String, List<String>> {

  @Override
  public List<String> apply(String input) {
    return Arrays.asList(input.split("[^\\p{L}]+"));
  }
}
